The new LDT-5500B Series Temperature Controllers are optimized for precision temperature control of laser diodes and other optoelectronic components. Two models combine up to 24W and 50W of thermoelectric control power with a hybrid smart-integrator feedback loop for precise temperature control. The LDT-5500B Series accept thermistor, IC, and RTD temperature sensors providing convenience and flexibility over a broad range of temperature control applications.These instruments utilize a hybrid smart integrator algorithm to ensure fast settling times and maintain high temperature stability, typically within +0.004°C. A new simple, intuitive front panel interface makes these instruments easy to use and with ILX interconnect cables and the industrys widest selection of laser diode mounts, you can set up and be controlling the temperature of your laser diode in minutes.The new USB interface and control software allows for fast, repeatable instrument control in R&D and manufacturing testing and other automated control applications.The LDT-5500B Series are a precision, microprocessor based thermoelectric (TE) temperature controller that deliver a low noise, bipolar constant current output of up to 5 Amps and 50W of heating or cooling power. These instruments close a precision temperature control loop through a variety of temperature sensors and display temperature from -99°C to 199°C or sensor resistance. The temperature controller topology, paired with a hybrid smart-integrator control loop result in fast settling times with a temperature stability of 0.004°C which is ideal for laser diode or optoelectronic component testing requiring stable wavelength and optical power.
The 5500Bs operate in constant temperature, constant resistance (sensor), or constant current mode. Attention to detail in the design of the low noise current source, feedback loop, and sensor measurement circuits ensure accurate, low noise temperature control that wont drift over time in any of the instrument operating modes. In constant temperature mode, the instrument will control to a setpoint temperature between -99°C and 199°C depending on the thermoelectric module performance characteristics, heat load, and temperature sensor connected to the instrument. Because these instruments are micro-processor controlled, the temperature can be displayed in °C accurately with the appropriate sensor constants entered through the front panel or USB interface.Even with two-terminal thermistors and their non-linear relationship between temperature and resistance and IC temperature sensors where a highly linear relationship exists between temperature and voltage or current, by using the appropriate equation for the selected temperature sensor and the pertinent calibration constants, residual errors of less than 0.01°C can be realized over wide temperature ranges.The 5500Bs low noise bipolar current source reduces the noise coupled to your laser diode for precise control and measurements in your application.
The 5500Bs offer user-selectable thermistor source currents of 10 µA and 100 µA allowing the instruments to measure resistance from 250Ω to 450kΩ providing control over a wide range of temperatures and applications. For a typical 10 kΩ thermistor, this corresponds to a temperature control range from -25°C to 60°C. Other temperature control ranges are possible by choosing different resistance value thermistors. For more information, refer to ILX Application Note Selecting Thermistors for Temperature Control. In addition to compatibility with a wide range of thermistors, the LDT-5500B also accepts IC temperature sensors and with the TSC-599 sensor converter, platinum RTD sensors. Depending on the temperature sensor selected, the LDT-5500B measures the thermistor resistance, the AD590 current or the LM335 voltage, calculates the temperature for display and controls precisely to a temperature set point.
Configuration of the LDT-5500B for your application is made even easier through a new front panel interface. Display modes are selectable for temperature, resistance, and current readout, easily visible with the bright green LED 4-digit display. SELECT and SET controls along with the rotary control knob allows you to quickly set temperature setpoints along with sensor calibration constants, output current limits, temperature limits, and the control loop gain. With ILX interconnect cabling and a wide variety of laser diode mounts, you can set up and control temperature within minutes.
In addition to normal instrument control and operating modes, the current output of the LDT-5500Bs are bound by fully independent programmable current limits. The temperature control loop can also be bound by programmable temperature limits. Adjustment of either of the limit settings is easy and precise even with the instrument controlling temperature. Furthermore, if a temperature sensor or the TE module should open, the 5500B automatically shuts the control output off and lights up a front panel LED indicating the cause of the fault.
The LDT-5500B architecture simplifies routine maintenance; calibration of the TEC current and sensor measurement can be performed via the front panel or through USB interface, without opening the instrument up or manual adjustments. A calibration mode is entered through unique push button combinations or remote commands, and all calibration data is easily entered via the front panel or USB interface. Calibration data is automatically stored in on-board non-volatile memory.
Full product specifications can be found in the LDT-5500B Series Brochure .
For additional questions contact ILX Lightwave directly at 800-459-9459 or firstname.lastname@example.org.